GB1379831A - Washingmachine drive - Google Patents

Abstract

1379831 Reversing gear DANFOSS AS 19 May 1972 [8 June 1971] 23643/72 Heading F2D A washing machine drive arrangement comprising a planetary gear and an associated clutch /brake disc is provided with a speed-responsive device to prevent disengagement of the clutch until the brake has been engaged in changing from one mode of operation to another. As shown, the planetary gear consists of a sun 10 connected to a driven shaft 6, a ring gear 13 constituting a drive pulley and planets 12 mounted on a carrier 17 which constitutes the clutch/brake disc. The carrier is provided with a brake lining 39 adapted to engage a face 25 of a fixed cover 24 and with two centrifugal weights 26 which are pivoted about the axes of the planets 12 and which are each provided with clutch and brake linings 35, 37 adapted to engage a flange 9 on a disc 8 secured to the shaft 6 and a flange 21 on an annular armature 20. In operation, for high speed drive, an electromagnet 18 is energized to move the armature 20 to the left along pins 22 against the action of springs 23, and thereby disengaging the brake 21, 37 and engaging the clutch 9, 35 under the centrifugal action of the weights 26 to lock the carrier 17 to the drive shaft 6. To produce low speed drive, the electromagnet 18 is de-energized and the armature 20 moves to the right, Fig. 3 (not shown), thereby engaging the brake 21, 37. The clutch 9, 35 remains engaged until the centrifugal force on the weights 26 is reduced sufficiently to be overcome by the opposing component of force produced by the action of springs 23 on the armature 20. The movement of the armature then moves the carrier 17 to the right to engage the brake 25, 29. The carrier being braked, the sun drives the ring gear 13 at low speed.